sha1sum *.ovf *.vmdk > new_image.mf tar -cvf kt_vnf_repacked.ova *.ovf *.vmdk *.mf You now have a virtual KT SO repacked image ready for onboarding. Advanced Repack Scenarios Repacking for Multi-Node KT SO Deployments Sometimes KT SO expects a chain of VNFs (e.g., vCPE, vRouter, vFirewall). In that case, repack each with identical base but unique roles. Use environment variables inside the repacked image to differentiate nodes upon first boot. Adding Custom Cloud-Init for KT SO If KT SO uses cloud-init, inject a user-data script:
virt-customize -a disk.qcow2 \ --hostname kt-so-vnf-01 After modifications, the disk may have free space. Optimize: virtual kt so repack
For engineers working with Korea Telecom (KT) service orchestrators, lab environments, or virtualized network functions (VNFs), the term "repack" signals more than just a file conversion. It represents a process of transforming, optimizing, and re-encapsulating virtual appliances to ensure compatibility, security, and performance. sha1sum *
virt-customize -a disk.qcow2 \ --mkdir /opt/kt_agent \ --upload kt_monitor.sh:/opt/kt_agent/ \ --chmod 0755 /opt/kt_agent/kt_monitor.sh \ --run-command 'echo "@reboot root /opt/kt_agent/kt_monitor.sh" >> /etc/crontab' Use environment variables inside the repacked image to
virt-customize -a disk.qcow2 \ --delete /etc/ssh/ssh_host_* \ --run-command 'ssh-keygen -A'